Elevatob



Dec. 22, l925- 1,566,713

G. s. WILLIAMSQN ELEvAToR F'iled June 15 1922 5 sheets-shet 1 65' ma m Dec.' 22, 1925. 1,566,713 l G. S. WILLIAMSON ELEVATOR Filed June l5. 1922 3 Sheets-Sheet 2 /Nl/ENTR Deco 22,

f G. S. WILLIAMSON ELEVATOR Filed June l5, v1922 3 Sheets-Sheet 5 vmounted on the car and vmovement istransniifttedfromtlrepiston f by suitable means,

lpreferably such as Will presently; be de scribed. vThe details ofthe means for di-V rectly controlling the movements lof the pls ton f vunder the inlluenceofA the compressed air, do not themselves form partofthe present invention and are yshown-in Figures 5, 6 and? and described gene-rally herein only for the purpose vofenabling theoperation to bev understood .'clearly.' As shown, the air .I supply 'pipe is connected to the Ichamber of a valve indicated, generally at'g,by the oscil- 2,; laatste the ,Stem g/ Of which um an iS/aaniitted or eXhaustedat-one end or the other v of the cylinder, so as to movethe piston in i n'one v`direction or the other at the will of the operator, by Whomv the spindle g is oscil lated in one direction .or the other. In the arrangement shown the 'piston rod fz'iis sult- 4ably connectedto'one of the joints of Vra lazy'- tongsya'one end of which is connected, as at `l'v/,Ito `a fined pointon the-car, While the' other end 'is' connected, at 72,2,"to a traveller kt Whichis 'mounted in suitable guides 105 -to move horizontallyacross the car and islconnected, as by anarm k, with the car doorY a2. By means, suchV as the means already described, the travellerl 704 will be movedfin one vdirection or theother across the car through the kexpenditure of the'energy developed by the operation of the compressor as the car moves up' or-doWn, and the oar door a2 will be movedto 'open' or to closed position, as the case may be, such movement-being continued until the traveller'is brought'to rest: by the stopsvvhic'h limit itsfmovement and b y the Vcessation of they movement ofthe piston'f through theoperation ofthe valve g to cut foff'the supply of air behind the piston. Y

' Inv the embodimentr of' the invention shown, the lvalve spindle g has an arm g2,

- cra-nk lever 2, mounted onthe car, the otherl provided with a pin `g3 which is'emg'gaged in -an elongated slotv z" in a link z'. lThe latter pivota-lly connected to one arm of a bell i' arm vofthe/lever having lconnected thereto a link if to which is connected, iny convenient position, a doorcontrolling handle The lower end vof the link a is connected to one arm of a'vbell 'crank '25 preferably mounted beneaththe floor a ofthe car, the other arm of thebell crank 5, `being connected by a link with a heart-shaped cam 7, pivoted at is'. The cam 7 co-operates With the safety interlocking rod a5, previously mentioned, movement of the cam in 'either direction from itsnorm'al position, shown in Figurev 3, lifting the rod a5 into locking engagement Vwith tliecontroller a? `and thereby preventing the starting ofthe.car.lv Also mounted on the pivot 8 of the cam 7 is a Weighted.

"latch 9 which is adapted to engage astud as carried lby the lower end of the interlock- *which passes about suitable guides and has its'. other end; connected to a- Weighted? or spring pressed linger 11 Which is -struck by the traveller 10,4, asl the door reaches itsffu'lly closed position,- a'nd is Vmoved thereby to move the latch 9 from e'ngagementwith the stud c of the rodl a5, thereby permitting the rod a5 to drop,fif the cam i7- is in neutral position, and permitting the controller to be moved to start the car up orfdovvn, but only When'the doora2 is in its fully closed posiy tion." The latch -z'g'is also' connected, as by a cordy or Wire 12,With-the emergency handle v liso that inl caseof fire, for example, the operatorfcan preventkthe locking of the car controller regardless 'of the position of t-he door. The link z', Which'is operatively con nected with the spindle g of thevalve g as hereinbefore described, through its "engage- '100 ment with the stud g3 v of theY arm g2 on the valve spindle g', at the limit of its movement in either direction, effects the. shifting of the connections of the valve g so as vto produce the movementpfy the piston f -in the cylinder f, in one direction or V5the other,

after the interlocking rod a5 has engaged the controller a3' to'prevent the starting of the 'cari lt Will now be understood that the movement ofthe door. controlling handle in one direction from its neutral position-brings about the closing of the door and, the locking ofthe lcontroller and, in the other direction, the opening' of the door and the'loeking of the controller. 'j Y "The movement of the car door t2 is made to effect corresponding movement" of the shaft door opposite Which the caris brought to rest. In previous arrangements this has been accomplished' by providing upon the car door or upon the traveller by Whichvit is moved, a' pair' of fixed, verti'cal'shoe's,k spaced apart and adapted to receive between them a stud vfixed toV or connected tov the shaft door so thatmo-vement of thecar door shall effect movement of the, shaft'ol'oor. Such fixed shoes" have been found to require careful adjustment and even lthen are a'source of trouble through vunintended contact with portions of the elevator shaft vor its equipment during themoveinent of the car;y In thepresentfcasethe shoes,'which movewith the Vcarv door and effect the movement 'of the shaft door, are themselves movably ed contact with partsgof thevelevator shaftV or its equipment andinay be moved l-intofoperative position only when thecar operator movesthe'controlling handle i4, to bring aboutlthe opening or the closing ofl the door. In the arrangement shown, two shoes m,`suitably'shapedas shown in .Figures 1, 3,8, 9` and 1Q, are pivotally-hung,as atm so as to swingvuponvertical axes, from the inoperative position 'indicated' by broken lines-'in Figure I() tothe operative position indicated-by. full lines in thelsame figure, the two fshoes being spaced apart, when yin` operative position, soas to receive between them theI coacting devices 'on'.the shaft door. The arms m2, both 4upperfand lower, which carry the'vertical portions of the shoes m, are provided with intermeshing gears m3, so that the two shoesshall 'move together butv in opposite directions..." The 'arms are also provided with Contact facesA m4 for cooperation with an actuatingl member lmewhich is secured to a verticalshaft m, supported inisuitable bearings carried by the guide rails 765 andlocated in linewith the .middle lof the space between the shoes m when the car doorl is closed. The shaftm6 `is operatively connected withr the bell crank i2, previously mentioned', so that the actuators m5 shall be swung from their normal or neutral position, indicated by the broken lines in Figure 10,to one side or thezother, as indicated by full lines in Figure 10, when the doorV controlling handle 4 is moved up or downfrom its neutral position.' In the arrangement illustratedfan arm fm? secured to the shaftV m has vconnected thereto a link m8 which is connected at its other end to the bell cranklever i2. 'Y rIhe shoes m, when free to be moved from operativeposition,1 are drawn by springs, as indicated 'atm11 in Figure 8, into inoperative position. By the movementof the actuator m5 the shoes m, through contact of the actuator, with the contact surfaces m, are moved from inop# erati've position to operative position, this action ,taking place only when the door is in fully closed-position.` As'soon, however, as the movementof the' door fromfclosed lposition begins and before the contactsurface m4 at oneside` isfree from the Aactuator m5,' the Contact surface m4 coactswith aiholding rail m1? which eXtends-acrossthe car nearly to the position .'occupiedby the actuator m5, so that, during the continued movement of the door and traveller c, the shoes'm are held in operative position;l l f f Fixedto the shaft ,door b v-i's a bracket 7) When, therefore, the door-,is 'stoppedlin'po sition o'ppositef'afshaft door,'-the operator, by 'manipulation of the'-`door ycontrolling handled@ notl only effects'the' vrelease 'of the power Ystorage 'device and theoperativel connection1 of the samevvitlrthe fcar 4door,but at the 'same timecauses the-shoes 'm-to swing into operativev position and thereby to 'dis-` engagethe [latch b3 'and releasev theV shaft door'for movement with the car door through the traveller k f f It will be understood that-various changes in [details of construction and arrangement can bemadeto suit different conditions'of use'y and that, except 4asfpointed out inthe accompanying claims, the invention isrnot limited to the particular construction shown and described yherein nori to the jointl coaction of the elements referredl to herein. *i Y I claim as my invention: y 41. In an elevator, vthecombination -of a car, elevator ,mechanism for operating' the car, ya car door, an air cc` mpressorinv such operative lrelation with the elevatorimechanism thatfits operation Iwill-"be determined by yth'e'movement of the car andtransmitting devices through which the power developedv by the air compressor isfap lied to thejmovement of the'vdoor. y p Q. In an elevator,'the combination of a car, elevatorv mechanismy for operating' Ithe car, va door, a 'power cylinder and piston mounted on the car, transmittingfdevices wherebyl the door is moved through the movement of the pistonandan air comi pressor connectedy tothe cylinder. and in such operative relation fv'vith thefelevator mechanism that-'itsV opera-tion will bedetermined byfthejmovementof the car.' 1 i 3. In Van elevator,the'combination'of a car, elevator mechanismffor operating the car," a door, a power v cylinder and ypistonv mounted on the' car,rtransmitting` devices whereby the door is Vmovedl Ithrough theV movement of the piston, an air compressor connected to the cylinderand'mf such .operative relation with the elevator mechanism that its operation willfbe determined yby the movement ofk the 1 car vand lmeans under l'the control Vof the operator Vforcontrc'illingthe addmission of air under pressure to thecyl- 1n er.- 1-

Vpres'sor `is applied to the movement of the door, and relatively fixed means whereby the compressor is operated upon the 'movement of thecar.

5.A In an elevator,the/combination ofa,V

car, a car door, an air compressor mountedv onthe car, transmitting devices 'through which the power .developed by the air compressor is applied tothe movement-of the door, av relatively fixed cable, and means whereby the compressor is operated through the cable upon the movement of the car.

6. In anA elevator, the combination Vof a' car, a car dooran air compressor mounted on the` car, transmitting devices through which the power developed bythe air compressor is applied to the movement of the door, a driving drumhoperatively connected to t-he compressor, and a relatively fixed cable engaging said drum whereby the com-v pressor is operated upon the movement of the car. n f 1- 7. In an elevator,the combination of VVa car, a door, apower cylinder,V and piston mounted. on the car, transmittingv devices whereby the door is moved throughV the movementY of the piston, an air compressor also mounted on the car `and connected to t-he cylinder, and relatively, fixed means wherebythe compressor is operatedupon the movement of the car. y j 8. In an elevator, the combination of a car, ardoor, a vpowercylinder andv piston mounted on thecar, transmitting devices whereby the door is moved through the movement of the piston, .an air compressor also mounted on the car and connected to the cylinder, relatively fixed meanswhereby the compressor isvoperated upon theV movement of the car, and means under the control ofthe operator for controlling the admission of air under pressure to the cylinder.

l 9. In an elevator, the combination of a ca r, a Vmovable door,Vv a traveller mounted on the car and operatively connected to the door, a cylinder andvpiston operatively connected to the traveller, means to supply air under pressure to the cylinder,a valve to control the'admission ofair-to thecylinder, valve operating means underthe control of, theoperator, acar controller, a locking rod, means whereby the locking rod is. caused by` the oper-ation of the door controlling meansV to .engage the car controller, a latch normally engagingthe locking-,rod to holdthe same in locking position, and devices operated by the I movement of the door to closedv position, and operatively connected to said latch to disengage thesame fromthe lock- 10. In an elevator, the combination/of va car, a door, a powerdevice ymounted on the car and operatively connected to the door to n to move the same, door controlling means in operative relation with said v.power device, a car controller, a'locking rod adapted to. engage vthe Acar controller to prevent movement thereof, a vcam vactuated by movement of the door controlling-'devices in eitherdirection to move the lockingrod into,.-locl ing position, and means actuated by the movement of the car doorto closed positionto disengage the -latch from the locking` rod.

12.InV an-elevator, the combination-of a shaft door, "acar, atraveller m'ountedon the car, means toeffect movement ofthe traveller in either-direction at the .will 4of the operator, a projecting part carried-by the shaft door, a shoe mounted vony the traveller and adapted to swing upon a vertical axis andto co-'opera-te with the projectionnof the shaft door, and means under control of the operator tc swing said shoe into operative position. n 5 13In an elevator, the combination Vof a shaft door,-a car, a traveller mounted on the car, means to eectimovement ofthe traveller in either direction :at the will of the operator, =a projecting part carried by the shaft door, a shoe mounted on the traveller and adapted to swing upon a-vertical' axis and to cooperate with'the projection of lthe shaft door, a door controller on the car, and operative connections between said` controller and said shoe whereby-the shoe is moved into operative position.

14. In an elevator, vthe combination of a shaft'door, a car, aftravellermounted von the car, vmeans to effect lmovement of thetraveller in either'direction-at the will of the operator, a projecting part -carriedcby' the lshaft door, a. shoe mounted ,-on the me Y traveller and :adapted to swing -upon a ver- Y traveller is inrclosed position. l5.. In" an elevator, thecombination of a shaft door, a car, a traveller mounted on the car7 means'to effect movement of the traveller in either' direction at the Will of the operator, a projecting part carried by the shaft door, a pair of shoes mounted on the traveller and connected to swing together upon vertical axes to cooperate with the projection of the door, springs tending to hold the shoes in inoperative position, means under control of the operator to swing the shoes into operative position, and a holding bar mounted on the car to cooperate with the shoes to prevent swinging movement thereof in the movement of the traveller.

16. In an elevator, the combination of a shaft door, a car, a traveller mounted on the car, means to effect movement of the traveller in either direction at the will of the operator, a latch carried by the shaft door, a shoe mounted on the traveller and adapted to swing on a vertical axis and to cooperate with the latch of the shaft door, a door controller mounted on the car, and operative connections between said con# troller and said shoe whereby the shoe is moved into operative position.

17. Inan eleva-tor, the combination of a shat't door, a car,V a traveller mounted on the car, means to effect movement of the traveller in either direction at the Will of the operator, a pair of vertical shoes mounted on the traveller and spaced apart, a latch mounted on the door to prevent movement of the door and having an arm for engagement Vby one of said shoes and a dog in operative relation with the latch and adapted for engagement by the other of said shoes.

This specification signed this 14th day of June, A. D. 1922. GLENN S. VILLIAMSON. 

